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L.A.PAUGHT ELECTRO (No Model.)

-DBNTAL HEATER.

No.439,238. Patented Oot.28,1890.

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UNITED STATES PATENT OEEICE.

v LUTHER ASHLEY FAUGIIT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE VILMINGTON DENTAL MANUFACTURING COMPANY, OF SAME PLACE.

ELECTRO-DENTAL HEATER.

SPECIFICATION forming part of Letters Patent No. 439,238, dated October 28, 1890.

Application filed July 23, 1890. Serial No. 359,631. (No model.)

To @ZZ whom it may concern:

Be it known that I, LUTHER ASHLEY FAUGHT, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Electro-Dental lleaters, of which the following is a specification.

My invention relates to a portable electrical heating appliance or instrument for use in dental surgery.

IfIeretofore it has been customary in order to ll the cavity of a tooth with gutta-percha or with similar material, or to otherwise manipulate such materials in the mouth in relation with tooth substances, to first apply such material or materials thereto, andthen by means of a simple dental tool exposed at intervals to a llame or otherwise warmed to press the material firmly therein, so that it might to a greater or less degree become set in the cavity.

The principal object of my invention is to provide, first, a simple, durable, and effective heating appliance for the working of guttapercha or somewhat similar material or substances into indentures or cavities formed in the teeth of the mouth; second, to provide an effective appliance for readily transmitting the requisite amount of heat to artificial crowns, veneers, or parts of crowns provided with pins or pieces of porcelain without pins for permitting of theirinsertion into apertures or cavities prepared to receive them in natural teeth or roots in the mouth, and, third, to provide an effective device for transmitting heat by means of an instrument or probe for the purpose of warming or drying the canals in the roots of teeth.

My invention consists of a portable electrodental heating device constructed, arranged, and operating substantially in the manner hereinafter described, and pointed out in the claims.

Referring` now to the accompanying drawings, Figure l is an elevational view of an electro-dental instrument containing or embodying the particular characteristic features of my invention. Fig. 2 is a vertical central section of the heater, having an incandescent electric lamp mounted therein orother resistance or heat-generating device placed in the path of an electric current and with two conductors leading therefrom to a source of electric energy, and with a suitable tool applied to the upper end thereof for working the filling; and Fig. 3 is a similar view of a portion of an instrument embodying the features of my invention and adapted to permit of the heating of artificial crowns, veneers, or parts of crowns for securing the same in cavities prepared to receive them in the mouth.

Referring to the drawings, a is the holder or housing, made of wood or other suitable insulating material, provided at the lower extremity with a removable button b and at the opposite extremity with a tapering or other suitable form of cap c, having a recess c adapted to receive a point or other suitable dental tool; or the recess or cavity c may be made in such form as to permit of an artiiicial crown d, being mounted therein, as shown, for instance, in Fig. 3, for securing the sameinto a natural tooth or root in the mouth.

c is an incandescent lamp or other heatgenerating appliance mounted in one end ot` the holder a and provided with Vconductors or wires l and 2, having terminals 3 and 4 for connection with a suitable type of battery or other source of electric energy 5. vThe cap c, made of aluminum or other good conducting material suitably secured to the'holdera, is

provided with one or more apertures f, in order that the operator may readily ascertain from time to time whether the lamp is being maintained in the proper state of incandescence during application or use of the instrument. The cap c, applied to the instrument, whether of tapering form, as shown in Figs. l and 2, or of a form adapted to receive an artificial crown, as shown in Fig. 3,is made of a metal or material that will readily conduct heat from the lamp e or other resistant material or heat-generating device so long as a currentis permitted to pass from a source of energy 5 thereto, and while the filling of the cavity is being carried on by the operator. It will be observed that as the instrument is arranged, in case of breakage of the lamp the cap c may be readily removed, and as well the but- ICO ton b at the opposite end of the holder a,'for permitting of the withdrawal of the lamp with its two wires or conductors from the battery operations is always had, and such as can be maintained at the required temperature ad lbz'tam for the working of gutta-percha or other similar material or fillings into cavities in the teeth, or otherwise, in contradistinction to the methods heretofore employed for the working of such fillings by using a simple hand-tool heated first in a fiame or over a heater and then brought into contact with the filling. Such a method consumed time, and the operation of filling a tooth in such manner was not at all satisfactory, owing to the fact that the operator had to continually expose the tool to the heat of a spirit-lamp fiarne or heater and then the tool became cool almost before it could be applied to the filling. This serious disadvantage is entirely obviated by the use of a heater of the type hereinbefore described. 'In practice it has been found that the points or other tools adapted for use in connection with said heater give most satisfactory results when made of aluminum or other good heat-conductiug material. Furthermore, it ha's been found that a lamp of from two-to five candle power is sufficient, ordinarily, for the working of a fill# ing of the character described; but, however, I do not wish to be understood as limiting myself to the use of a lamp of such candlepower, exclusively, in such a heater.

The construction of heater illustrated in Y Fig. 3 is the same as that illustrated in Figs.

l and 2, with this exception, that the upper removable cap c is provided with a sunken head instead of being made tapering for the reception of a point or other tool for working the filling in the cavity or causing the same to become firmly set therein. The sunken head of the cap c is adapted to receive an artificial crown provided with a pin or dowel, or veneer, 'or parts of crowns with or without pins, so that when the cap has been heated up by the lamp e it will transmit its heat there# from to and maintain it in the artificial tooth, and its pin of' platinum or other material soft- -ening the material applied theretol and also that embedded in the cavity prepared to receive the same, in order that when the heater is removed the artificial crown may become firmly fixed in the required position in the l mouth.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. An electro-dental heating device provided with a lamp connected with a source of electric energy and having a cap of conducting material provided with a recess or cavity, substantially as and for the purposes set forth.

2. A dental heating appliance having a holder within which is concealed an electric heat generating device connected with a source of energy, and the holder provided with ak cap of "conducting material having a recess for supporting a tool, substantially as and for the purposes set forth.

3. An electro-dental heating device provided with an insulating-holder within which is mounted an electric lamp connected with a source of energy, and the holder provided with a removable cap of conducting material, having a tapering recess therein for receiving a point or other tool of similar material, substantially as and for the purposes set forth.

4r. An electro-dental heating device having a lamp mounted therein and connected with a source of electric energy, and a cap provided with a recess for receiving a point or adapted to be connected with a source of elec tric energy, a conical-shaped cap of conductv ing material, having an aperture or apertures formed therein, and the cap provided with a recess for receiving and holding a point or other suitable device, substantially as and for the purposes set forth.

6. A dental-heating instrument having a holder provided with an electric lamp or other heat-generatingappliance, a button applied to one end of the holder, and a removable recessed cap connected with the opposite end and adapted to permit of the insertion of a tool or other article into or onto said cap, substantially as and for the purposes set forth.

In witness whereof I have hereunto set my signature in the presence of two subscribing witnesses.

LUTHER ASHLEY FAUGHT.

Vitnesses:

Guo. W. REED, THOMAS M. SMITH.

IOO 

